Gain Structure - Peavey MediaMatrix X-Frame 88 Manual

Configurable digital audio processor

Hide thumbs Also See for MediaMatrix X-Frame 88:

Table of Contents

X-Frame

88 Designer's Manual

™

Gain Structure

Gain structure is among the most important, often debated and misunder-

stood topics in the audio industry. For years, engineers have disagreed with

each other about proper levels, gain I/O, meters and other issues that affect

the way we work. When digital audio came into the mainstream, the topic's

confusion was only compounded, and today, few fully understand the inner

workings of gain structure. This is true within MediaMatrix

as well.

Although this manual does not present an exhaustive discussion on the

topic, it is important to understand the basics of gain structure, and how it

relates specifically to the X-Frame 88.

The X-Frame 88 is shipped from the factory with "unity" gain through the

unit. In other words, if you inject a 1.23VAC 1 kHz sine wave into the input

of the X-Frame 88 without adjusting any controls, you will get the a

1.23VAC sine wave on the output. It is important to note, however, that the

MM-8802 is NOT shipped with unity gain settings, because it is primarily

intended for larger MediaMatrix systems where the gain structure is set up

differently. For more information on gain structure with the MM-8802 and

MediaMatrix systems, please refer to the MM-8802 User's Manual.

Adjusting the gain structure for the X-Frame 88 is possible both at the ana-

log and digital gain stages. All controls for adjusting the X-Frame 88's input

and output gain stages are found in the Local Inputs and Local Outputs wire

blocks. From the tools pull-down menu, select Device | Input-Output |

Local | Inputs & Outputs. Place both the green input and brown output

block on the screen. Double click each one to open

Page 18

Table of Contents